#include <stdio.h>

int main(void)
{
    int a = 1, b = 1;
    int a_post, pre_b;

    a_post = a++;
    pre_b = b++;
    printf("a a_post    b pre_b \n");
    printf("%ld %5d %5d %5d\n", a, a_post, b, pre_b);

    return 0;
}